fix security caution for 'remote' setting (was 'xmlrpc')

FS#2722 add settings_regex class, use it for hidepages

remove no longer used email pattern, validation is done by mail_* functions

remove php_strip_whitespace() alternate, no longer required as php min req't ensures its always present

add comments for recent settings class additions to extra.class.php

fixed line endings

removed a bunch of functions which were deprecated in 2005/2006

removed unnecessary css parts

improved disabled acl permission styling (FS#2714)

force screen_mode to string type (IE returns a number which is always triggering the default option in the following switch/case block

fix missing 'subscribed' key

Display media file size only if file exists (prevents PHP warning)

replace remaining hardcoded 'colspan' values with ->colspan

improve comments on settings::update() method

tidy up authtype setting class (incl. fix issue with auth change/logoff occurring when only one auth plugin is enabled and other settings are updated)

add property to show disabled plugins, set it to false (to hide by default)

ensure diff formatters escape their output

Remove the prefix from inline diffs.

The line prefix was not actually indicating what it should indicate.
In particular, anything in a "changed" block would show a "!" even
if the entire line was ad

Remove the prefix from inline diffs.

The line prefix was not actually indicating what it should indicate.
In particular, anything in a "changed" block would show a "!" even
if the entire line was added or deleted. Better to print nothing than
something that's wrong.

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Fix width of indicator column.

litte fixes

fixed html error in plugin lang file

separate default settings from non-existing settings
setting type read from metadata eqaul to empty string is default 'setting' class (a textarea), everything else should be a existing class otherwis

separate default settings from non-existing settings
setting type read from metadata eqaul to empty string is default 'setting' class (a textarea), everything else should be a existing class otherwise 'setting_no_class' is loaded

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Complete metadata and defaults of auth plugin configs

Monospace font for header prefix.

fix a couple of diff issues: shouldn't be any need to html encode before finding diffs; move quantifier outside regex condition